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71 lines
2.3 KiB
71 lines
2.3 KiB
/* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "plugin/keyring/buffer.h"
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#include <memory>
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#include "my_dbug.h"
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#include "plugin/keyring/common/keyring_key.h"
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namespace keyring {
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void Buffer::free() {
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if (data != NULL) {
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delete[] data;
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data = NULL;
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}
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mark_as_empty();
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DBUG_ASSERT(size == 0 && position == 0);
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}
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bool Buffer::get_next_key(IKey **key) {
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*key = NULL;
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std::unique_ptr<Key> key_ptr(new Key());
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size_t number_of_bytes_read_from_buffer = 0;
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if (data == NULL) {
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DBUG_ASSERT(size == 0);
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return true;
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}
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if (key_ptr->load_from_buffer(
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data + position, &number_of_bytes_read_from_buffer, size - position))
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return true;
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position += number_of_bytes_read_from_buffer;
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*key = key_ptr.release();
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return false;
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}
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bool Buffer::has_next_key() { return position < size; }
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void Buffer::reserve(size_t memory_size) {
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DBUG_ASSERT(memory_size % sizeof(size_t) ==
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0); // make sure size is sizeof(size_t) aligned
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free();
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data = reinterpret_cast<uchar *>(
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new size_t[memory_size / sizeof(size_t)]); // force size_t alignment
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size = memory_size;
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if (data) memset(data, 0, size);
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position = 0;
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}
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} // namespace keyring
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